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New Layer#getFeatures method with fast hit detection for VectorLayer

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This commit is contained in:
Andreas Hocevar
2019-09-26 19:55:14 +02:00
parent 057cc92716
commit 315695eeb8
13 changed files with 429 additions and 31 deletions
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17
src/ol/renderer/canvas/Layer.js
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@@ -213,23 +213,24 @@ class CanvasLayerRenderer extends LayerRenderer {
/**
* Creates a transform for rendering to an element that will be rotated after rendering.
* @param {import("../../PluggableMap.js").FrameState} frameState Frame state.
* @param {import("../../coordinate.js").Coordinate} center Center.
* @param {number} resolution Resolution.
* @param {number} rotation Rotation.
* @param {number} pixelRatio Pixel ratio.
* @param {number} width Width of the rendered element (in pixels).
* @param {number} height Height of the rendered element (in pixels).
* @param {number} offsetX Offset on the x-axis in view coordinates.
* @protected
* @return {!import("../../transform.js").Transform} Transform.
*/
getRenderTransform(frameState, width, height, offsetX) {
const viewState = frameState.viewState;
const pixelRatio = frameState.pixelRatio;
getRenderTransform(center, resolution, rotation, pixelRatio, width, height, offsetX) {
const dx1 = width / 2;
const dy1 = height / 2;
const sx = pixelRatio / viewState.resolution;
const sx = pixelRatio / resolution;
const sy = -sx;
const dx2 = -viewState.center[0] + offsetX;
const dy2 = -viewState.center[1];
return composeTransform(this.tempTransform_, dx1, dy1, sx, sy, -viewState.rotation, dx2, dy2);
const dx2 = -center[0] + offsetX;
const dy2 = -center[1];
return composeTransform(this.tempTransform_, dx1, dy1, sx, sy, -rotation, dx2, dy2);
}
/**